fitting a curve 中文意思是什麼

fitting a curve 解釋
擬合曲線
  • fitting : n 1 配合,裝配,裝修。2 (衣樣的)試穿。3 〈 pl 〉【機械工程】用具;零件,附件,(接頭)配件。4 ...
  • a : an 用在以母音音素開始的詞前〉 indefinite art 1 〈普通可數名詞第一次提到時,冠以不定冠詞主要表示類...
  • curve : n 1 曲線;彎曲;彎曲物。2 曲線規 (=French curve);【機械工程】曲線板;【棒球】曲線球;【統計學...
  1. Research and application of a new method of curve fitting

    實驗數據的曲線擬合方法及其應用
  2. It is a very effective method of curve fitting

    用遺傳演算法進行數據擬合是一種行之有效的方法。
  3. A sub - pixel image matching method on re - sampling and curve fitting

    重采樣和曲面擬合的圖像匹配方法
  4. Based on the observed runoff data, more accurate designed flow to a culvert or a small bridge may be obtained by curve fitting on frequency curve of pearson type iii distribution

    精度較高的橋涵水文設計是基於所在地實測的徑流資料,採用頻率曲線的適線法獲得。
  5. Technicans are trying to find out a more reasonable point to describe work state of pump for some reasonless factors of this model, the key technology of developing ads is on adopting a means by using theoretical calculation and curve fitting to build a reasonable pump state graph model, the model " s rationality based relations between pump efficacy and sinking depth is illustrated by restrict programme argumenting

    抽油增效輔助決策系統的開發,其關鍵技術在於採用理論計算及曲線擬合的辦法,建立合理的泵況圖模型,通過嚴格的方案論證闡明基於泵效-沉沒度關系的泵況圖模型的合理性。通過實際數據,檢驗模型的有效性。
  6. This paper researches and analyses the developments of web technology and magnetostrictive transducers from world wide region. the paper also analyes the characteristics curve of magnetostrictive transducers based on its equivalent circuit and researches the method how to make sure its syntony frequency and its electric simulation network parameters. at the same time, by using jsp technology, a magnetostrictive transducer electric simulation application is designed based on b / s three - tier system structure. the experiment data is fitted by curve fitting module. the equivalent input impedance of it with stimulate loop is separated based on the results of curve fitting and the syntony frequency and electric simulation network parameters of magnetostrictive transducers is determined by the input impedance. the method presented in this paper can determine the syntony frequency and electric simulation network parameters of magnetostrictive transducers with a better accuracy than the testing method of syntony & anti - synton y. further more, jsp, the advanced technology at current, has been used to realize a magnetostrictive transducer web electric simulation system. the system has good human computer interface and the function of resource sharing and information publishing. the research of this paper and its achievements have some practical merits in the researchful and applied fields of magnetostrictive transducer

    用java編程語言編寫的曲線擬合模塊,對輸入的實驗數據進行了最小二乘法的曲線擬合;根據曲線擬合結果可從帶激勵線圈的磁致伸縮換能器的輸入阻抗中分離出磁致伸縮換能器鐵芯在無激勵電流時由機械振動形成的等效輸入阻抗,並由此輸入阻抗確定磁致伸縮換能器的諧振頻率及電氣模擬網路參數。本課題提出的方法與傳統的諧振?反諧振法相比,能更準確地確定磁致伸縮換能器的諧振頻率及其電氣網路參數。同時,採用當前比較先進的web技術,實現了基於jsp的磁致伸縮換能器web電氣模擬系統,該系統具有良好的人機界面和資源共享、信息發布功能。
  7. Fitting the experimental data into the general effective media ( gem ) equation, a theoretical percolation curve was gained. a mathematical model was proposed which is based on the gem equation and the dilution effect of filler volume fraction due to thermal volume expansion

    使用有效介質普適方程( gem方程)對實驗數據進行擬合,得到導電復合材料的理論滲流曲線,根據gem方程和基體的體積膨脹,建立起一個數學模型。
  8. In this paper, presents a new measuring method of the braiding angle of composites for the edge image with computer based on curve fitting theory. the method can suppress noise and absolve the problem of the point of edge is not continue

    本文在邊緣圖像的基礎上,根據復合材料自身的特點,提出了一種基於曲線擬合的編織角的自動測量方法,該方法能夠有效地解決噪聲、邊緣點不連續等問題。
  9. Two nonlinear simulation methods are designed by curve fitting method and anfis which seem simply and right in the simulation experiment. based on the model different control strategies also were realized in detail such as chopped current control ( ccc ), angular position control ( apc ), amplitude - change ccc and pi control. a simple torque sharing function ( tsf ) method and a tsf controller were designed which decreases torque ripple effectively

    文章中還建立一種基於模糊神經網路的非線性模型,並對比分析了三種方法,模擬中確定了電機的最優開通關斷角,在此基礎上實現了電流斬波控制、角度位置控制、變幅值電流斬波控制以及分段雙閉環pi控制,模擬結果表明,它實現了電機的正常運行,很好的抑止了電機轉矩脈動,同時有效地降低了噪聲。
  10. During the instantaneous frequency estimation of lfm, there exists some error in the edge, so in the dissertation, a fitting method is proposed to modify it. from the computer simulation, the following result is obtained : for cw, the method based on cwt is most effective, and with the snr rising, the error curve of it is more and more closer to crb. for lfm, the method based on wvd gives the best result, and the effects of cwt and stft are similar for multi - component signal, compared to stft and wvd, cwt is a better choice

    通過模擬發現,在單頻回波的瞬時頻率估計中,基於cwt的方法最為有效,隨著信噪比的提高,其均方誤差曲線越來越接近克拉美?羅界;在線性調頻回波的瞬時頻率估計中, wvd法得到的效果最好,而cwt與stft法的估計效果比較接近;在多分量信號的瞬時頻率估計中,相對于stft和wvd法, cwt法是一個更好的選擇。
  11. The dissertation is summarized as follows : 1 ) b - spline curve fitting is studied. several curve fitting methods are disc ussed, and a method for b - spline curve fitting in the specified tolerance is pr esented. 2 ) b - spline surface fitting is studied

    作者完成的主要工作如下: 1 )研究了b樣條曲線擬合的問題,討論分析了數種常用的曲線擬合方法,並提出了一種給定允差下b樣條曲線擬合的方法。
  12. With the experiment part, the errors of sk - 21 nc machine tool have been measured, and a serial of data is gotten which lead to the error discrimination. ( 3 ) based on the kinematical theory of mbs, the calculation methods for the ideal center envelop curve of grinding wheel on cam grinding, the practical cutter track, inverse contour of cam, ideal nc instructions, precision nc instructions, the inner / outer normal and the fitting criterion of curve have been all discussed in detail in this paper

    ( 3 )通過精密加工的約束條件方程,探討理想刀具路線、逆變數控指令與實際刀具軌跡之間的映射關系,解決誤差補償技術提高加工精度的核心問題? ?當要求數控磨床的砂輪中心準確到達給定的理想點時,精密數控指令值究竟該是多少,如何能夠通過計算,獲得這樣的數控指令值,給出經修正的數控指令計算方法。
  13. Fitting a curve

    曲線擬合
  14. By analyzing phase angle of meshing geometric drawing position, the theoretical formula of cycloid gear actual operating space of cycloid planetary gear speed reducer is driven, at the same time, fitting a curve, and discussing engineering significance of function curve to combine reality

    摘要通過分析嚙合相位角幾何圖形的位置,推導出擺線針輪行星減速器中擺線輪實際工作范圍的理論公式,畫出了嚙合相位角函數的擬合曲線,並結合實際討論其函數曲線的工程意義。
  15. Firstly, in order to deal with the problem that the accuracy of the demarcating concentration calibrate algorithm can ’ t satisfy the requirement, this thesis proposes a new demarcating concentration calibrate based on fitting a curve. the new algorithm uses least square method to keep the accuracy. the measuring results show that the accuracy of the algorithm is higher and it can satisfies the requirement of application

    首先,本文針對生化分析系統中現存的濃度標定演算法不精確,難以滿足實際需要的問題,提出了一種基於曲線擬合的濃度標定演算法,演算法基於最小二乘原理進行曲線擬合以保持測量精度,實際樣本測量表明該演算法具有較好的測量精度,能滿足應用要求。
  16. After looking up a large amount of native and foreign information, the materials used in the experiment were as follows : ptfe base, graphite filler, molybdenum disulfide filler, copper powder filler, carbon fiber and so on. the experimental method is that the formula was designed according to uniform experimental method, the relationship between formula and frictional property was found with spline function and then the representative test points were chosen from fitting curve to make verification test for optimization. the preparative technique of solid lubricant is cold - press sintering method

    經過查閱大量國內外文獻資料后確定原料為:聚四氟乙烯樹脂為基體,加入石墨、二硫化鉬、銅粉、碳纖維等填料;試驗方法為:根據均勻試驗方法設計配方,用樣條函數找出配方與摩擦性能的關系,然後在擬合曲線上選取具有代表性的試驗點進行驗證試驗,達到優化的目的;制備工藝:冷壓燒結法制備固體潤滑劑。
  17. The results indicated that the dimension, shape and purity of base material could meet the functional demand of solid lubricant ; the thermal decomposition temperature of ptfe resin exceeds 400 c, but organic and inorganic packing filler added in ptfe made the water absorption rate of composite material increased, melting temperature and decomposition temperature decreased, in the meanwhile oxidative decomposition reaction was accompanied ; polar groups such as c = o, c - o - c and so on in the carbon fiber surface is advantageous to increase compatibility with other components and interlayer shearing strength ; uniform design experimental method could help to find the relationship between formula and frictional property by relatively small tests. the developing trend of each formula ' s friction coefficient could be showed by fitting curve ; the friction coefficient with no copper powder or graphite in formula was relatively big. this fact showed that copper powder and graphite should be used cooperatively ; it was found that when the ratio of copper powder to graphite by weight is 15 : 60, 30 : 30 - 40 and 60 : 15 - 30 respectively, the friction coefficient was relatively small. the degree of crystallinity of pure ptfe reached maximum by air cooling and the abrasion loss also reached maximum among three ones ; at the same time, the abrasion loss of solid lubricant sample was also the biggest among three ones ; when solid lubricant matched with 45 # steel axle or gcrl5 steel axle, lubricant transfer film could be formed on metal surface, thus direct contact between the surface of metal friction pair rings was reduced. their working life was elongated extremely ; there was mainly much graphite, a little ptff, moo3, feso4, cus and so on in lubricant transfer film

    試驗結果表明:所選原料的尺寸、形狀及純度可滿足固體潤滑劑的性能要求;聚四氟乙烯樹脂熱分解溫度超過400 ,但在ptfe中加入無機填料會使復合材料吸水率提高,熔融溫度及分解溫度降低,且伴有氧化分解反應;碳纖維表面含有c = o及c - o - c等極性基團,有利於提高其與其它組分的相容性,提高層間剪切強度;均勻設計試驗方法能夠用較少的試驗次數找出配方與摩擦性能間的關系,擬合曲線基本能表示各配方的摩擦系數發展趨勢;配方中不加銅粉或不加石墨,其摩擦系數均較高,說明銅粉和石墨應該配合使用;當銅粉15份、石墨60份時,銅粉30份、石墨30 - 40份時,銅粉60 、石墨15 - 30份時,摩擦系數均具有較低值;純聚四氟乙烯樹脂在空氣冷卻時結晶度最大,磨損量也是三者中最大的;同時,固體潤滑劑試樣在空氣冷卻時的磨損量也是三者中最大的:不論是固體潤滑劑與45 #鋼軸配副或是固體潤滑劑鑲嵌入銅套后與gcr15鋼軸配副,在金屬表面均可形成潤滑轉移膜,從而減少金屬摩擦副表面間的直接接觸,大大延長其使用壽命;轉移膜中主要含有較多的石墨、少量聚四氟乙烯、 moo 。
  18. It achieves full test automation from calibrating, running, failure diagnosis and data processing, which establish it an intelligent test system. in the software, a curve fitting program which based on the system ' s principle which can greatly improve the calibration precision and a safl mathematical statistics program for the test data are made

    在試驗系統軟體設計上,結合試驗機原理,採用基於原型函數的動態標定數據曲線擬合提高了載荷標定的精度;通過對比各種曲軸試驗數據的處理方法,同時考慮在實際運用中的效果,計算機統計採用了疲勞極限統計分析( safl )法。
  19. We put forward a scheme that multisensor data fusion - surface fitting and curve - fitting was applied in this system according to the temperature drift and nonlinear of sensor. communication between personal computer and measurement system of sensor was realized by means of transceiver with the type of max232, which could finish the data conversion, data processing and printing task, with the result that the measurement system was further improved

    針對傳感器測量的溫度漂移和非線性等問題,提出了利用多傳感器信息融合技術?曲面擬合法和曲線擬合法來加以解決,並通過max232收發器實現pc機與傳感器測量系統之間的通信,完成數據轉換、數據處理和列印等功能,使測量系統更加完善。
  20. In order to detect the edge contours of the object in images, several edge detectors are firstly introduced and we make a comparison of them in performance. a method for fitting a two - dimensional curve based on slopes of the curve is also shown

    從圖像序列中檢測運動目標並估計其三維運動和結構,首先要從圖像邊緣提取開始,本文先對幾種常用邊緣檢測運算元性能進行綜合比較,接著闡述了一種基於邊界斜率的二維曲線形狀描述方法。
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